Moved foreign_object models.py into a module.

tests/foreign_object/test_forms.py

@@ -0,0 +1,29 @@
+import datetime
+
+from django import forms
+from django.test import TestCase
+
+from .models import Article
+
+
+class FormsTests(TestCase):
+    # ForeignObjects should not have any form fields, currently the user needs
+    # to manually deal with the foreignobject relation.
+    class ArticleForm(forms.ModelForm):
+        class Meta:
+            model = Article
+            fields = '__all__'
+
+    def test_foreign_object_form(self):
+        # A very crude test checking that the non-concrete fields do not get form fields.
+        form = FormsTests.ArticleForm()
+        self.assertIn('id_pub_date', form.as_table())
+        self.assertNotIn('active_translation', form.as_table())
+        form = FormsTests.ArticleForm(data={'pub_date': str(datetime.date.today())})
+        self.assertTrue(form.is_valid())
+        a = form.save()
+        self.assertEqual(a.pub_date, datetime.date.today())
+        form = FormsTests.ArticleForm(instance=a, data={'pub_date': '2013-01-01'})
+        a2 = form.save()
+        self.assertEqual(a.pk, a2.pk)
+        self.assertEqual(a2.pub_date, datetime.date(2013, 1, 1))